Vent-stopper for pumps



(No Moae1.)f

A. SCOUGAL..

Y l VENTSTOPPER FOR PUMPS. V N0. 383',773. Patented May 29, 1888.

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ANGUS SCGUGAL, OF HICKORY CORNERS, MICHIGAN.

VENTSTOPPER FOR PUMPS.

SPECIFICATIQN forming part f Letters Patent No. $783,773, dated May 29, 1888.

Application tiled February 9, 188B. Serial No. 263,474. (No model.)

To @ZZ ywhom, may concern/r Be it known that I, ANGUs SooUGAL, a citizen ofthe United States ofAmerica, residing at Hickory Corners, in the county of Barry and State ofMichigan, have invented certain new and useful Improvei'nentsinVentstoppers for Pumps; and I do hereby declare the following to bea full, clear, and exact description of the invention, such as will enable others skilled in the art to which itappertains to make and use the same, reference beingrhad to the accom-V panying drawings, and to letters or figures of reference marked thereon,which form a part of this specification.

Myinvention relates to certain new and useful improvements in vent-Stoppers; and it consists in the novel construction and arrangement ofthe parts thereof, which will be more fully hereinafter described, and pointed out in the claims.

The object of my invention is to coustructa vent-stopper which is simple and effective in its operation and construction, strong and durable, easily handled, and readily understood. I attain this object by the construction illustratedin the accompanying drawings, wherein like letters of reference indicate similar parts in the several views, and in which-- Figure l is a side elevation of aportion ofa pnmpstock and well-tube, showing my improved vent-stopper in connection therewith. Fig. 2 is adetail perspective view of the springarm, which carries the vent-stopper plug at its lower end, and also showing the pressure pawl, which is mounted in connection with said vent-stopper-carrying arm.

A indicates the pumpstoclr, B the platform, and C the welltube. The well-tube is provided with a Yvent-opening, c. A clip, D, sur" rounds the well-tube C, the screw-threaded ends of which pass through apertures in a T- head, e, integrally formed with the upper portion of a springarm, E. This T-head cofthe arm E is formed with a curved depression, e', which admits of a close connection thereof with the well-tube C. The lower portion of the spring-arm E is formed with abend at the point e at the lower end of the said arm, the inner face of said lower portion of the arm having a vent stopper or cushion, F, secured thereto. This lower bend in the said arm E permits of a space being formed between the lower portio of the arm and the welltube, and at the same time allows the vent stopper or cushion F to be normally held in contact with the ventopening c in the welltube.

The lower portion of the arm E is formed with a slot, e, through which the shank g ofa pressure pawl or arm, G, is passed, and to the outer end of which the pull or operating rod H is secured at its lower end, the upper end thereof extending up through the base-plateB for engagement by the person using the pump, as will be readily understood. The pressure pawl or arm G is also formed with an aperture,

vg, near its inner end, through which a pin, g2,

is inserted on the outer side of the spring-arm E, as fully shown in Fig. l. Theinner end of the said pawl or arm G is broadened, as atg, and slightly concave on its under side. This broad' ened portion of the said pawl or arm G bears against the well-tube C, the pin gAZ holding the said broadened portion of the arm against the welletube when operated, and the shoulders formed by said broadened portion of the arm have bearing against the inner face of the arm E on each side of the slot e in the lower portion thereof, which prevents the arm G from becoming disengaged from the armE.

`The operation of my improved device is as follows: When the pull-rod H is drawn upward, the inner broadened end of the pressure pawl or arm G is brought to bear 'firmly against the well-tube, the shoulders of said broadened portion forcing the arm E outward, the said latter -arm being limited in its outer movement by the pin e2, passing through the shank of the pressure pawl or arm` G. When the pull-rod is released, the arm E resumes its normal position and closes the vent, which was opened by the previously-described operation.

I clairn-` l. In a vent-stopper for pumps, the combin nation, substantially as before set forth, of the well-tube having a vent, an elongated spring arm secured thereto at one end and outwardly inclined therefrom, and having a cushion on its lower end to engage with the vent, a pawl carried in the lower end of said spring-arm having an inner T-head movably bearing against the well-tube, and a pull-rod secured to the outer end ofsaid pawla through said pawl on the outside ofthe springarm to limit the outward movement of the said spring-arm, and a pull-rod secured tothe outer end 0f said pawl.

In testimony whereof I affix my signature in presence of two witnesses.

ANGUS SGOUGAL.

Witnesses:

W. A. DRAPER, F. A. BLACKMAN. 

